How about a sleeping bag? :rof Haha, JK. I have read many different opinions on idling for extended periods. I try not to let mine idle any more thanjust warmongup, cooling down and being out of the truck for a few minutes. Some say it will wash cylinder walls down.
I sleep in mine whenever I need to... I don't worry about the idle times BUT I do maintenance as if I were on a severe duty schedule.Once in a while will not hurt it,I have idled it 6-8 hours a few times,as said though make sure your hoses and belt is in good shape.I always open the hood and prop the hood up on a soda can or whatever I have on hand
the only worry I would have is wet stacking/piston wash
I've idled mine plenty for lengths of time...mostly cause I'm napping for a few hours at a rest area and it's cold. Last year I got stuck on I-40 west behind a multi-car and tractor trailer wreck because of snow and ice. Truck idled for 10 hours while I sat and slept over night.
I'ts a diesel so it's probably no big deal. I've seen Peterbilts. Kenworths, etc... idle constantly over night.
There have been trips where my engine has not turned off for over 24 hours. Driving and napping. I never worry about it. She's a beast!
My truck has idled for hours on end. When i was working up in Wyoming -30* it would idle most of the day. I know Pipeline Inspectors that never turned there trucks off during the day. They would start them up at 5 in the morning and not shut them down till 7 or 8 that night. Never had a problem.
Realistically, it won't hurt it. Like others said, diesels are meant for this. Semis etc let them run all day and night. I know a guy who lets his run if he goes to a ball game. He never shuts his off. I wouldn't worry, but put the purse down and grab a sleeping bag. jk lol.